G'Day Julia,

If you were browsing the Web and you clicked a hyperlink for another
page, you would be upset if nothing happened.

An email address (in a web page, a Word document etc) that is also a
hyperlink is DESIGNED to cause your browser (Word etc) to open
your default email application, and supply it that address.

A lot of people would be upset if it did not!!

Don't click an email hyperlink unless you want to sent an email to it.